Principles
Isobutene of fossil origin makes a one-way journey from underground (as oil) to the atmosphere (as CO2) from its production to its consumption
Bio-sourced isobutene offers a virtuous circle: the plants from which it is made capture CO2 and are then converted into fuels or cosmetic ingredients, which are consumed by users, releasing the CO2 which is then recaptured by plants.
Savings of CO2 emissions compared to the use of oil range from 50% to 80% depending on the particular feedstock plant and process used.